植物在与病原物的协同进化过程中,逐渐形成了一系列复杂高效的保护机制来抵御病原物的侵染。植物中抗病基因所决定的抗病性是一种高水平的品种对病原菌小种的专化抗性。同时,植物还形成了一套适应性更广的可诱导的抗病机制。由于植物可诱导抗病性是一种非特异的广谱抗病性形式,因而倍受关注。在我们实验室的前期研究中,运用抑制性差减杂交法构建了水稻诱导抗病性相关差别表达cDNA文库,分离鉴定了200多个在诱导抗病性中差别表达的cDNA。其中的2个克隆分别含有可能编码水稻MAPK(mitogen-activated protein kinases)和SERK(somatic embryogenesis receptor kinase)蛋白激酶的基因片段。本文克隆和鉴定了水稻中与苯并噻二唑(benzothiadiazole,BTH)诱导抗病性相关的编码MAPK的OsBIMK2基因和编码SERK的OsBISERK1基因全长cDNA;研究了OsBIMK2基因和OsBISERK1基因在水稻—稻瘟病菌亲和与非亲和互作过程中的表达模式;原核表达了OsBIMK2基因,获得重组OsBIMK2蛋白,并研究了重组OsBIMK2蛋白...
【英文摘要】
Plants have evolved a series of complicated defense mechanism against pathogens attack during their long-term process of co-evolvement. Plants disease resistance controlled by the resistance gene (R gene) is a resistance with high specificity at the cultivar to race level. In addition, plants have also evolved an adaptive inducible resistance mechanism in response to pathogen invasion. Plant induced resistance interests us due to its non-specificity and wide-spectrum against to pathogens. In prev...